Charge forming device



H A. KELTY `2,100,511

CHARGE FORMING DEVICE.

Nov. 30, 1937.

Filed Feb. 27, 1'955 H7@ s 70 7l Patented Nov. 30, 1937 Y Y UNITEDSTATES PATENT OFFICE Y' f 2,100,511 Y I CHARGE FORMING DEVICE Harry A.VKelty, New Castle, Par.

.Application February 27, 1935, Serial No. 8,540

sclaims. (cruz- 25) This invention relates to a device for supplying Idesignates an exhaust manifoldof an internal additional uids to theintake manifold of an combustion enginewhile II designates an intakeinternal combustion engine. manifold.

An object of the invention is the provision of The radiator,A generallydesignated by the nu- T a device which will supply an additionalquantity meral I2, is connected with the cooling system of air inconnection with vapors from the radiator of an engine and is providedwith the usual connected with the cooling system of an engine, overflowpipe I3 extending from a space I4 at the vapors being derived fromwater, alcohol, and the top of the radiator to "a point as indicated`kerosene or a combination of any two of the at I5 slightly belowthe'bottom of the radiator. 101 vapors. A valve casing 2B has aninternal chamber 2l 10V Another object of the invention is the provisionwhich is placed in communication with the inof a device for supplyingadditional uids to an take manifold by means of aV pipe 22. VThis pipeintake manifold of an internal combustion engine has one end threaded at23 into a nipple 24 of with a thermostat movably mounted for controlthecasing. The other end of the pipe is conl ling the flow of some of thefluids to the manifold, nected by a union 25 with a threaded nipple 2615 the movable mounting of the thermostat providin the manifold II. .ling for an adjustment of the thermostat towards A sleeve is threaded at3I into a nipple 32 or away from the exhaust manifold of the engine. atthe lower end of the casing. The sleeve is A further object of theinvention is the proprovided with a central passagev 33 and a valve 2oViSiOll 0f a deViCe fOr Supplying additional fluid seat 34 at itsupperend. A tubular member 35 20 to an internal combustion engine andincluding is threaded at 36 into an enlarged end 31 of the avalve casingin communication with the intake sleeve 3B and is provided with ahexagonal pormanifold and also in communication with a tion 38 wherebyVthe tubular member may be source of fluid, a Valve being mounted formoveroi-,ated Y 25 ment inthe Casing and COIltIOllihg the 110W 0f Thecentral portion of the tubular member is 25 l ud through the Casing t0the manifold, a thelprovided with a passage 40 having a valve seatmostat being swingably mounted on the casing 4| on which is mounted acheck Valve 42. A with means for securing the thermostat in properSpring 43 has one. end in engagement with a p osition when moved to apredetermined posicheck valve 42 While the other end engages 'a 30towards 0r away from the exhaust man1 collar I4 threaded into the upperend of the 30 0 passage 40; l Y f A still further object of theinventlon 1s the lA nipple 45 has an internally threaded pocketprovision of a' device for Controlling tha ow of 46 to receive thethreaded lower end of the tubuan additional fluid to the intake manifoldof an lar member. 35. The nipple, svpmvided with a internal combustionengine Vand including a valve casing in communication with the intakemanifold and also in comm-unication Withia source Seat 4| of fluid, a.thermostatic strip being swingably f carried by a support swingablymounted on the .A Valve 5u has althrdefi sem fdsosdjt valve casing foradjustment towards or away nght angles`t0:the engl udma ams o. e mpp.e40

from the exhaust manifold, the thermostatic and 1s gapted to 'ntrhthetoyprf' strip having a swivel connection with a valve through e. sge be525 em 1S p' om movable in the casing and controlling the ilow Wlth a'mamp a mg mem er 43 in the tubular member 35 and below the valve offluid through the casing The reduced end 53 of the nipple isadapted to45 `1n the drawmg: be connected with a source of fuel such as gaso- 45Figure 1 is a, fragmentary View in elevation line. `A tubular connection55 1s threaded into aV and partly in section of an internal combustionhOHOW boss 55 0n the 035mg 25 and thls tubular engine showing my-deviceconnected between the member has a Passeig? 51 Connetred- Wlth theintake manifold and the-radiator of an engine, Chamber 2| Ofhthe CaSlhg.The membel' 55 1S and threaded at 58 into the boss. 50

I Figure 2 is a horizontal section taken along A flexible tube 69, suchas rubber, connects the the line 2-2 of Figure 1, and Y tubular member55 with a pipe GI which extends q Figure 3 is a vertical section of amodified into a housing 62. The pipe 5I is in communiform of the device.l cation with the interior of the housing 62 inter- Y 5 5 Referring moreparticularly to the drawing, mediate the opposite ends of the housing.YThis .55

central passage 4l adapted to align with the port 35 housing is open, asshown at S3, while the opposite end 64 is closed.

A pipe S5 projects into the housing 62 and extends below the inner endof the pipe 6| and terminates short of the bottom 63 of the housing.This pipe extends above the closed end of the housing and is connectedby a flexible tube 8% with the lower end |5 of the overflow pipe of theradiator.

A support in the form of a bar, as shown at l0, has an opening 7|adapted to be received by a threaded boss l2 on the upper end of thecasing 20. The bar rests upon a shoulder 13 of the casing and is held inan adjusted position by means of a nut 'i4 threadedonto the boss l2.

The outer end of the bar '10 carries a sleeve 'l5 which receives a bolt'i6 secured in place by means of a head Il and a nut I8.

A thermostatic strip, generally designated by the numeral 80, is formedof two sections, one section being of brass, as indicated at 8|, and theother section, as indicated at 82, is formed of steel. These two stripsare secured together in the usual manner. The strip rests upon thesleeve 'l5 and is provided with a passage 33 through which the bolt 'F5passes with the head l'i resting upon the strip 80.

The opposite end of the strip is provided with a slot 85 which isadapted to be received by an annular groove 86 formed in a valve stem Elwhich is inserted in a passage 88 in the boss l2.

A conically-shaped valve 90 on the end of the valve stem engages theseat 3d in the sleeve 30.

The operation of the device shown in Figs. l and 2 is as follows: Whenthe engine is cold the thermostatic strip 80 is bowed outwardly andupwardly from the valve casing 20, thereby raising the valve 90 from itsseat 3d. Thus when the engine is started gasoline will be drawn throughthe passage 41, past the check valve 42 and thence through the casing20, the tube 22, to the intake manifold As soon as the thermostaticstrip has been aifected by the heat of the exhaust manifold l0, thestrip will move inwardly towards the bar 'l0 and cause the valve 90 toclose the passage 33 and thus cut oiT the supply of gasoline to theintake manifold.

It will be appreciated, however, that the chamber 2| of the casing 20 isalways open to the air and to the vapors from the radiator l2., When thewater in the radiator is sufficiently heated, vapors will pass throughthe overow tube |3 into the housing 62 and will be drawn through. thetube past the valve 90, and into the intake manifoid n.

It will be appreciated that duringV the winter months when the radiatorhas been supplied with the necessary alcohol, the alcoholic vapors willbe drawn through the tube 5S into the intake manifold and will not onlysupply additional fuel but will aid in reducing the carbon and will alsoaid in loosening the carbon' which has already formed cn the piston headand the combustion chambers of each of the cylinders.

A quantity of kerosene is supplied to the `radiator and will oatupon-the water and as the water in the radiator is heated vapors of kerosene will also be carried into the intake manifold and will also aid innot only removing the carbon deposited on the walls of the combustionchambers but will prevent further depositing of carbon on the walls ofthe chambers. Thus it will be seen that the incursion of the vapors ofthe water, the alcohol and the kerosene will prevent knocks in the.cylinders.

The thermostatic strip 80 may be swung towards or away from the exhaustmanifold l0 by loosening the nuts 14 sufiiciently to swing the bar '|0on its pivot so that the strip may be nicely adjusted towards or awayVfrom the exhaust manifold in order to Vproperly time the closing of thevalve 90 as will be desired during the varying conditions of the seasonsthroughout the year. In other words when the thermostatic strip is movedto a predetermined position adjacent the exhaust manifold I0, thethermostatic strip will come into action more rapidly for closing thegasoline supply as would be necessary during the warm months. During thewinter months the thermostatic strip will be adjusted at a greaterdistance from the exhaust manifold in orderk to delay they closing ofthe valve S0 to permit the engine to operate under suicient power untilthe engine is suihciently warmed to require no additional fuel for thepurpose.

It will be noted that the thermostatic strip 80 may be readily removedfrom its position by re-v moving the nuts v'|S and then the bolts 16. If

it be desired at any time to cause the valve to be closed when thethermostatic strip is heated, the thermostatic strip may be turned overand reversed from its position shown in Fig. 1 so that the brass strip8| will be adjacent the bar i@ instead of away from it. Thus it will beseen that this particular form o thermostat may be used not only forvarying the time of closing of the valve due to its swinging motion butit may be readily converted for operating vthe valve in the oppositedirection.

In the device shown in Fig. 3 the thermallyoperated valve is adapted tocontrol the supply of vapors to the intake manifold.

In this case the internally threaded boss |00 of the casing |0| isprovided with a plug |02.

A pipe |03 is adapted to connect the casing with the intake manifold andfor supporting the casing above the intake manifold. The pipe |03 is incommunicationrwith a chamber |04 in the casing.

threaded boss |01 of the valve casing. Anut |08 secures the bar |05 inposition. A thermo-V static strip in this case, indicated by thenumeral|09, has the brass strip ||ll adjacent the bar |05 while the steel stripis located outwardly. A bolt H2 and a nut ||3 secures the strip |09 tothe bar |05. The construction of the valve ||2 and the thermostat areidentical With the construction shown in Fig. l exceptthat the thermo'-static strip is reversed in position as has been previously explained.

A flexible tube a connects the casing with the housing 02 by means ofthe pipe 55.

By this construction the valve ||2 is normally opened when the exhaustmanifold supplies sufcient heat to the thermostat to move the valveoutwardly from its seat and vapors as has been previously explained fromthe radiator are supplied to the intake manifold. v Y Y In the radiator|2 the space I4 above the usual tubes, is shown at |33L as beingsupplied with a cooling iiuid which may be water or a mixture of waterand alcohol. On top of the water and alcohol is a blanket of kerosene ora light grad of lubricating oil shown at Ma.

When the engine is started` some suction affects the top of the radiatorand some vapor from the radiator together with air is drawn into themanifold n As the engine heats, the mixture of air and alcohol in theradiator is heated and an intimate mixture of aqueous and alcoholicvapors are formed. The vapors are drawn through the blanket of oil andsome of the oil is vaporized and the oil vapors are carried along withthe other vapors through the pipe I3 to the housing 62 where the vaporsare mixed with the proper proportions of air and. the air and the vaporsare intimately drawn into the intake manifold Il of the engine.

By such a method for operating an engine not only is carbon prevented byperfect combustion but the production of carbon monoxide is eliminated.

In some cases it may be preferable to dilute the light lubricating oilwith kerosene.

It is to be borne in mind that where the wood oil is used in thespecication and claims it is intended to comprehend kerosene, a lightlubricating oil, or lubricating oil diluted with kerosene.

I claim:

1. In an internal combustion engine'having an intake manifold and anexhaust manifold, a device for supplying an additional iiuid to theintake manifold comprising a Valve casing, a valve in the casing, meansfor placing the casing in communication with the intake manifold, athermostat having one end pivoted on the casing and swingable towards oraway from the exhaust manifold, and means for adjustably retaining thethermostat in various positions, said thermostat being connected withthe valve for operating the valve to open position when said thermostatis set in operation by the heat of the exhaust manifold. Y

2. In an internal combustion engine having` an intake manifold and anexhaust manifold, a device for supplying an additional fluid to theintake manifold comprising a valve for controlling the iiow of the iiuidto the manifold, a bar pivotally mounted on a' xed support,.andswingable towards or away from the exhaust manifold, means foradjustably retaining the bar in various positions, andra stripresponsive to temperature changes secured to the bar and swingabletherewith, one Vend of the strip being free and connected to the valvefor causing opening of the valve when the strip is thermostaticallyoperated.

3. In an internal combustion engine having an 'I intake manifold and anexhaust manifold, a device for supplying an additional uid to the intakemanifold comprising a valve casing in communication with the intakemanifold, a valve in the casing for controlling the flow of fluid, astrip responsive to temperature changesY and having a free end connectedwith the valve, means pivotally mounted on the casing and supporting theother end of the strip whereby the strip may be swung towards or awayfrom the exhaust manifold, and means for adjustably retaining saidsupporting means in various positions between the casing and the exhaustmanifold for varying the position of the strip with respect to theexhaust manifold.

HARRY A. mTY.

